A bit new to numpy, trying to move over some IDL code. I have a complex array selection expression, where I need an array of indexes as a result, so I can use this as a selection expression to apply changes to a different array.
I have two images, image1 and image2, plus an array sigma, the result of a previous calculation. All have the same shape. quality is a scalar threshold. I need the indexes where image1 and image2 are not 0 and the sigma value at that point is lower than my threshold. I then take these indices and store some value against this in a different array. In pseudo code: indexes = where(image1 > 0 and image2 > 0 and sigma < quality) result[indexes] = i # scalar When I run this numpy tells me that the that the truth value of the array comparison is ambiguous -- but I do not want to compare the whole arrays here, but the value for every point. How do I do this Regards Ludwig _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
